Combination burner mounting and air control



July 23, 1929.

C. J. SHERWOOD COMBINATION BURNER MOUNTING AND AIR CONTROL 2 Sheets-Shet 1 Filed Dec. 14, 19x6 IN V EN TOR.

ATTORNEYS.

July 23, 1929. c, SHERWOOD 1,722,253

COMBINATION BURNER MOUNTING AND AIR CONTROL INVENTOR.

. Jaumod A TORNEYS.

4 Patented July 23, 1929.

UNITED ST TES Parent? EOFFIQE.

CARLYLE J. SHERWOOD, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO COEN COMPANY, INC., 01 LOS ANQELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

COMBINATION Brianna MOUNTING [AND AIR. CONTROL. 7

Application filed December 14, 1926. Serial No. 154,692.

This invention relates to burners such as are adapted for use on furnaces generally referred to as industrial furnaces and furnaces for power purposes, etc., and particularly to improvements on the structure shown in my co-pending application entitled Gas burner,- filed June 16, 1926, Serial Number 116,339.

Modern industrial furnaces usually employ 10 oil burners of the socalled mechanical type in which the. oil is injected in a cone-shaped spray into the furnace througha circular opening-in the brickwork of the furnace wall,

together with the necessary volume of air to support combustion. The air for combustion is usually controlled by an air register which is so constructed that a swirling motion is imparted to the air as it enters the furnace so that it will thoroughly co-mingle with the oil,

spray and form a homogeneous combustible mixture;

The object of the present invention is to generaly improve and simplify the construction and operation of burners of the character described; to provide a register or mounting whereby a gas burner and an oil burner may be supported and so positioned with relation to each other as to cooperate or burn in unison or independently; to provide a register embodying an adjustable air control which will serve to supply air equally well to either burner or both in unison and further to provide a pivotal mounting for the register whereby the burners may be swung outwardly away from thefurnace front for inspection, cleaning, repairs, etc.

The invention is shown by way of illustration in the accompanying drawings, in which Figure 1 is a front view of the register, 40 Figure 2 is a horizontal longitudinal section taken on the line IIII of Figure 1,

Figure-3 is a longitudinal section taken on the line III-III of Figure 1,

Figure 4 is a cross section taken on the line IV-IV of Figure 3. f

Refering to the drawings, in detail, and particularly to Figures 1 and 2, A indicates the brickwork or front wall of a furnace in which is formed alcircular opening B. Se= cured to thefurnace in alignment with the opening B and in front thereof by lugs and screws 2 or other suitable means is a burner mounting and an air regulating device generally indicated at C.- A mountingof this character is usaully referred to as an an regisat right angles to the inner wall of the castter as it directs and regulates the air deliveredto support combustion within the furnace, but In the present instance, it also serves another a function, to-wit, that of supporting a gas burner generally indicated at D and an oil burner E. The register consists of four main castings, generally indicated at 4, 5, 6 and 7, the construction and function of which will now be described. The casting 4 is ring-shaped or clrcular in cross section and is provided with a series of radially disposed lugs 2 by which it is bolted and permanently secured to the furnace .front by screws, bolts or other suitable means. Formed on one side of the castlng are a pair of hinged lugs 8 and formed on, the. opposite side thereofis a perforated flange 9, the function of which will hereinafter be described.

Positioned in alignment with the casting 4 whichmay be termed the base'casting, is a. second casting 6. This is also ring-shaped or circular in cross section and it is supported from the base casting by hinged lugs 8 and a pintle 9 which extends through the lugs 8 and 8 The opposite side of the casting is provided with a flange 9 which registers with the flange 9 on the base casting and both of these flanges are drilled to receive bolts 10, whereby the casting 6 may be secured against pivotal movement about the pintle 9.

Formedintegral with the inner surface of the casting 6 are a plurality of radially disposed overlapping vanes 11, the inner ends of which terminate in a hub member 12. Each vane presents a convolute or warped surface similar to that of an impeller or fan and as they overlap each other the entire projected area is covered and heat loss by radiation is prevented. The vanes also serve the function of imparting a swirling motion to the air which is admitted to the furnace to support combustion. Any suitable number of vanes may be employed and they are sufliciently separated with relation to each other to-permit the proper volume of air to enter. The vanes are arranged in a cone-shaped formation as shown in Figures 2 and 3, but their inner ends are flattened and terminate ing 6. A series of supporting surfaces are thus formed and these serve as a support for I the casting 5. This casting is also ringshaped and has a diameter smaller than the interior diameter of the casting 4 thereby they are swung-about the pintle 9, as will and a union the present instance, issubstantially identicalto the gas burner disclosed in my copending application heretofore referred to and a detail description of the same is, therefore, thought unnecessary. It suffices to say that the burner is ring-shaped and is provided with onecor more rows of perforations,

as shown at 17, which are drilled on the different angles and tangentially disposed so as to cause the discharging gas to enter with a swirling motion. I

It might further be stated that the gas ring is provided with an angular extension 18 and that-this is connected with a gas supply pipe 19 through means of an elbow 2O 21, the pipe 19 being disposed directly below the pintle 9 and in alignment therewith so that the burner may swing in unison with the castings 4:, 5, and 6, when hereinafter be described. The casting 6 serves four functions: First that of asupv is slidably port for the oil burner E, secondly that of a support for the gas burner D; third that of a support for the vanes whereby the air admitted is given a swirling motion and fourth that of a support for the castings 7. whereby "the amount of air admitted is re lated. I

he plate 7 is circular or disc-shaped and mounted on the pipe '22 which is securetl'in he hub member 12. The plate? is provided with a hub member 23. A set screw 24 or the like passes through thehub and enters a slot formed in the pipe and rotary motion of the plate is thus prevented.

The plate is, otherwise, provided with handles 25 whereby it may be adjusted to and from the casting 6 and it is further provided with a torch door 26 to'permit introduction of the lighting torch when the burners have started.

In actual practice, it. will be understood 1) that the as supplying pipe 19 may be provided wit a valve (not shown) or like means whereby gas HOW to the burner D. is regulated. In starting the furnace a lighting torch is introduced through the torch door 26 and the gas is turned on. The gas is ignited by the flame of the torch and if it is Y desired to operate the gas burner alone, it will only be necessary to regulate the damper door 7 to supply the right amount of air. This air enters through the annular opening 27 formed between the castings 6 and 7 and then passes between the vanes 11, these impart a swirling motion to the air and it thus mingles' with the gas discharging from the perforations 17. These are preferably disposed tangentially and in a reverse direction to the vanes 11, thus discharging the gas in its swirling movement in a direction opposite to the swirling movement of the air, thereby causing a homogeneous mixture and promoting better combustion.

space indicated at 13;

If it is desired to operate the oil burner, at v between the lugs 15 which supports the gas burner and as such will increase the homogeneous mixing of air and fuel. The bypassing of a certain amount of the air is of considerable importance, in the present instance as it not only promotes combustion by causing a better mixing of air and fuel but .it also tends to cool the gas burner and the innermost castings which. are subjected to the greatest proportion of radiated heat from the flame and the interior-of the furnace.

If, at any time, itis desired or necessary to inspect, clean or repair the burners, it is only necessary to release the bolts 10. This permits the several castings to be swung about the pintle 9 and as the burners are supported by these castings they will be swung outwardly away from the furnace. front where they'will be accessible. fuel supplypipe 19 in direct alignment with the pintle 9 is also of importance, as it will only b necessary to loosen the union connection 21 when the burners are swung away from tlie furnace. In other words, it will not be necessary to break the fuel gas connection when the register is open.

While certain features of the present invention are more or less specifically described, I

.The mounting of the s be resorted to within the scope of the apand finishes of the several parts employed ended claims. Similarly that the materials may be such as the manufacturer may decide a or varying conditions or uses may demand.

I claim and desire to secure by Letters Patent is 1. Ina

comprising a base castingadapted to be secured'to a furnace front, a register hingedly supported on the base casting, a gas burner supported by the register, a plurality of radevice of the character described,

Having thus described my invention, what dially disposed vanes formed within the register, said vanes terminating at their in ner ends in a hub member, a pipe extending through the hub memberand having an oil burner projecting therethrough, and a damper plate supported by the pipe and movable to and away from the register to regulate the admission of air to the register, said vanes w'1th1n the reglster imparting ELSWlllmg movement to the a1r before it co-mingles with the oil and gas discharging from the burners. Y 2. A device of the character described,

comprising a base casting adapted to. be secured to the furnace front, a registerv hingedly supported .on the base casting, a

ring-shaped castingsecured to the register and concentric therewith to form an annular air passage, a gas burner supported by the ring-shaped casting, a plurality of vanes formed interior ofthe register, an oil burner supported by the inner ends'of the vanes, and a damper plate movable to and away from the register to regulate the. admission of air to the register, said vanes being angularly disposed to impart a swirling motion to the air so as to co-mingle with oil and gas when discharged by the burners and said vanes being also angularly disposed to deflect a portion of the incoming air around the ring-shaped casting to cool the same and also the gas burner.

3. In a device of thecharacter described,

comprising a circular base casting. adapted t'o'be secured to a furnace front, a register carried thereby andlhinged in relation thereto, said register being of cylindrical formation and registering with the cylindrical wall of the base, an annular casting'disposed wlthin the base and spacedv apart' therefrom to form an annular air passageway between the casting and the wall of the base, said castmg being secured to the register portion of the structure and adapted: to swing outwardly with it, an annular gas burner carried by the register portion of the structure and secured to the forward edge of the annular internal casting whereby air may pass through the central opening of the burner as well as around the edge thereof, and a plurality of radial vanes disposed within the center of the register and acting to impart a swirling motion to air passing through the register and centrally of the base and the burner to provide air for combustion of the gas in the burner, said vanes acting to divert a portion of the air around the outside the burner to commingle with the flame produced thereby.

4. A device of the character described,

comprising a cylindrical base member adapt ed to be secured adjacent to and in communication with a furnace opening, a cylindrical register hinged to said base member and adapted to swing outwardly. therefrom, a

register and extending outwardly and forwardly from the central axis thereof, a cylindrical ring disposed within the base member and being of a lesser diameter than the internal diameter of said base member whereby an annular passageway is formed between the wall of the "base member and the wall of the cylindrical ring, means for attaching said ring to the register adjacent the outer ends of the radial vanes, means for attachmg a gas to divert a portion of the flowing air outwardly to flow through the annular passage way between the -ring and the base and to thereafter flow around the outer edge of the gas burner to commingle with the flame produced thereby. v v

5. A device of the character described, comprisinga cylindrical base member adaptedvto be secured adjacent to and in communication with a furnace. opening, acylindrical register hinged to said base member and adapted to swing outwardly therefrom, a plurality of radial vanes secured within the register and extending outwardly and forwardly from the central axis thereof, a cylindrical ring disposed within the base inember and being of a lesser diameter than the internal diameter of said base member whereby an annular passageway is formed between the wall of the base member and the wall of the cylindrical ring, means for attaching said ring to the register adjacent the outer ends of the radial vanes, means for attaching a gas burner at the forward edge of said cylindricalring, a

gas burner in the ftjfm of an annular ring secured to said attac ing means and disposed in central longitudinal alignment with the ring and the register whereby air passing through the register and the ring may pass through the central portion of the gas burner,

said radial vanes acting to create a swirling motion of the air passing through the center of the gas burner and also acting to divert a portion of the flowing air outwardly to flow through the annular'passageway' between the ring and the base and to thereafter v flow around the outer edge of the gas burner to plurality of radial vanes secured within the i commingle with the 'flaihe produced thereby,

a pipe secured centrally through the radial vane structure ,and, carried by the register, a

damper plate secured upon the pipe and adapteduto move longitudinally thereof to regulate the effective opening of the register, .and an oil burner extending through the pipe and adapted to project a flame through the space enclosed by the gas ring.

6. A device of the character described, comprising a cylindrical base member adapted to be secured adjacent to and in communication with a furnace opening, a cylindrical register hinged to said base member and adapted to swing outwardly therefrom, radial vanes secured within the register an extending outwardly and forwardly from the central axis. thereof, a cylindrical rin'g disposed within the base member and being of a lesser diameter than the internal diameter of' said base member whereby an annular passageway is formed between the wall of the base member and the wall of the cylindrical ring, means for attaching said ring to the register adjacent the outer ends" of the radial vanes,

gas burner in the form of an annular ring sea plurality of d around the outer edge of the gas burner to means for attaching a gas burner at the forward edge of said cylindrical ring, a"

through the register and the-ring may pass through the central portion of the gas burner, said radial vanes acting to create a swirling motion of the air passing through the center ring and the base and tothereafter flow commingle with the flame produced thereby, a pipe secured centrally through the radial vane structure and carried by the register, a damper plate secured upon the pipe and adapted to move longitudinally thereof to regulate the effective opening of the register, an oil burner extending through the pipe and adapted to project a fia'me through the space enclosed by the gas ring, and a cone shaped diffuser secured upon the forward end of said pipe and acting to shield the flame from the oil burner from the air passing through the radial vanes to the furnace opening.

CARLYLE J. SHERWOOD. 

